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1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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43 #include "sampler.h" | 43 #include "sampler.h" |
44 #include "runtime-profiler.h" | 44 #include "runtime-profiler.h" |
45 #include "serialize.h" | 45 #include "serialize.h" |
46 #include "store-buffer.h" | 46 #include "store-buffer.h" |
47 | 47 |
48 namespace v8 { | 48 namespace v8 { |
49 namespace internal { | 49 namespace internal { |
50 | 50 |
51 V8_DECLARE_ONCE(init_once); | 51 V8_DECLARE_ONCE(init_once); |
52 | 52 |
53 bool V8::has_been_set_up_ = false; | |
54 bool V8::has_been_disposed_ = false; | |
55 List<CallCompletedCallback>* V8::call_completed_callbacks_ = NULL; | 53 List<CallCompletedCallback>* V8::call_completed_callbacks_ = NULL; |
56 v8::ArrayBuffer::Allocator* V8::array_buffer_allocator_ = NULL; | 54 v8::ArrayBuffer::Allocator* V8::array_buffer_allocator_ = NULL; |
57 | 55 |
58 static LazyMutex entropy_mutex = LAZY_MUTEX_INITIALIZER; | 56 static LazyMutex entropy_mutex = LAZY_MUTEX_INITIALIZER; |
59 | 57 |
60 static EntropySource entropy_source; | 58 static EntropySource entropy_source; |
61 | 59 |
62 | 60 |
63 bool V8::Initialize(Deserializer* des) { | 61 bool V8::Initialize(Deserializer* des) { |
64 InitializeOncePerProcess(); | 62 InitializeOncePerProcess(); |
65 | 63 |
66 // The current thread may not yet had entered an isolate to run. | 64 // The current thread may not yet had entered an isolate to run. |
67 // Note the Isolate::Current() may be non-null because for various | 65 // Note the Isolate::Current() may be non-null because for various |
68 // initialization purposes an initializing thread may be assigned an isolate | 66 // initialization purposes an initializing thread may be assigned an isolate |
69 // but not actually enter it. | 67 // but not actually enter it. |
70 if (i::Isolate::CurrentPerIsolateThreadData() == NULL) { | 68 if (i::Isolate::CurrentPerIsolateThreadData() == NULL) { |
71 i::Isolate::EnterDefaultIsolate(); | 69 i::Isolate::EnterDefaultIsolate(); |
72 } | 70 } |
73 | 71 |
74 ASSERT(i::Isolate::CurrentPerIsolateThreadData() != NULL); | 72 ASSERT(i::Isolate::CurrentPerIsolateThreadData() != NULL); |
75 ASSERT(i::Isolate::CurrentPerIsolateThreadData()->thread_id().Equals( | 73 ASSERT(i::Isolate::CurrentPerIsolateThreadData()->thread_id().Equals( |
76 i::ThreadId::Current())); | 74 i::ThreadId::Current())); |
77 ASSERT(i::Isolate::CurrentPerIsolateThreadData()->isolate() == | 75 ASSERT(i::Isolate::CurrentPerIsolateThreadData()->isolate() == |
78 i::Isolate::Current()); | 76 i::Isolate::Current()); |
79 | 77 |
80 Isolate* isolate = Isolate::Current(); | 78 Isolate* isolate = Isolate::Current(); |
81 if (isolate->IsDead()) return false; | 79 if (isolate->IsDead()) return false; |
82 if (isolate->IsInitialized()) return true; | 80 if (isolate->IsInitialized()) return true; |
83 | 81 |
84 has_been_set_up_ = true; | |
85 has_been_disposed_ = false; | |
86 | |
87 return isolate->Init(des); | 82 return isolate->Init(des); |
88 } | 83 } |
89 | 84 |
90 | 85 |
91 void V8::TearDown() { | 86 void V8::TearDown() { |
92 Isolate* isolate = Isolate::Current(); | 87 Isolate* isolate = Isolate::Current(); |
93 ASSERT(isolate->IsDefaultIsolate()); | 88 ASSERT(isolate->IsDefaultIsolate()); |
94 | 89 if (!isolate->IsInitialized()) return; |
95 if (!has_been_set_up_ || has_been_disposed_) return; | |
96 | 90 |
97 // The isolate has to be torn down before clearing the LOperand | 91 // The isolate has to be torn down before clearing the LOperand |
98 // caches so that the optimizing compiler thread (if running) | 92 // caches so that the optimizing compiler thread (if running) |
99 // doesn't see an inconsistent view of the lithium instructions. | 93 // doesn't see an inconsistent view of the lithium instructions. |
100 isolate->TearDown(); | 94 isolate->TearDown(); |
101 delete isolate; | 95 delete isolate; |
102 | 96 |
103 ElementsAccessor::TearDown(); | 97 ElementsAccessor::TearDown(); |
104 LOperand::TearDownCaches(); | 98 LOperand::TearDownCaches(); |
105 ExternalReference::TearDownMathExpData(); | 99 ExternalReference::TearDownMathExpData(); |
106 RegisteredExtension::UnregisterAll(); | 100 RegisteredExtension::UnregisterAll(); |
107 Isolate::GlobalTearDown(); | 101 Isolate::GlobalTearDown(); |
108 | 102 |
109 has_been_disposed_ = true; | |
110 | |
111 delete call_completed_callbacks_; | 103 delete call_completed_callbacks_; |
112 call_completed_callbacks_ = NULL; | 104 call_completed_callbacks_ = NULL; |
113 | 105 |
114 Sampler::TearDown(); | 106 Sampler::TearDown(); |
115 OS::TearDown(); | 107 OS::TearDown(); |
116 } | 108 } |
117 | 109 |
118 | 110 |
119 static void seed_random(uint32_t* state) { | 111 static void seed_random(uint32_t* state) { |
120 for (int i = 0; i < 2; ++i) { | 112 for (int i = 0; i < 2; ++i) { |
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302 ExternalReference::SetUp(); | 294 ExternalReference::SetUp(); |
303 Bootstrapper::InitializeOncePerProcess(); | 295 Bootstrapper::InitializeOncePerProcess(); |
304 } | 296 } |
305 | 297 |
306 | 298 |
307 void V8::InitializeOncePerProcess() { | 299 void V8::InitializeOncePerProcess() { |
308 CallOnce(&init_once, &InitializeOncePerProcessImpl); | 300 CallOnce(&init_once, &InitializeOncePerProcessImpl); |
309 } | 301 } |
310 | 302 |
311 } } // namespace v8::internal | 303 } } // namespace v8::internal |
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